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Merge pull request #222 from camptocamp/access_keyboardcontrol

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KeyboardDefaults control improvements
This commit is contained in:
Éric Lemoine
2012-02-28 03:02:19 -08:00
parent 1c6d44e5d5 c0b02b278a
commit 43809ea330
4 changed files with 142 additions and 48 deletions
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63
examples/accessible.html
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@@ -31,13 +31,26 @@
font-size:1em;
text-decoration:underline;
}
a.accesskey {
color: white;
}
a.accesskey:focus {
color: #436976;
}
a.zoom {
padding-right: 20px;
}
</style>
<script src="../lib/OpenLayers.js"></script>
<script type="text/javascript">
var map = null;
function init(){
var options = {
controls: [new OpenLayers.Control.KeyboardDefaults()]
controls: [
new OpenLayers.Control.KeyboardDefaults({
observeElement: 'map'
})
]
};
map = new OpenLayers.Map('map', options);
var wms = new OpenLayers.Layer.WMS(
@@ -57,31 +70,37 @@
keyboard, pan, panning, zoom, zooming, accesskey
</div>
<a class="accesskey"
href=""
accesskey="1"
onclick="document.getElementById('map').focus(); return false;">
Go to map
</a>
<p id="shortdesc">
Demonstrate how to use the KeyboardDefaults option parameter for layer types.
Demonstrate the KeyboardDefaults control and how to use links
with Access Keys to navigate the map with the keyboard.
</p>
<a class="zoom"
href="javascript: void map.zoomIn();"
accesskey="i">
zoom <em>i</em>n</a>
<a class="zoom"
href="javascript: void map.zoomOut();"
accesskey="o">
zoom <em>o</em>ut</a>
<table>
<tbody>
<tr>
<td>
<a href="javascript: void map.zoomOut();"
accesskey="o">
zoom <em>o</em>ut
</a>
</td>
<td>&nbsp;</td>
<td>
<a href="javascript: void map.pan(0, -map.getSize().h / 4);"
accesskey="n">
pan <em>n</em>orth
</a>
</td>
<td>
<a href="javascript: void map.zoomIn();"
accesskey="i">
zoom <em>i</em>n
</a>
</td>
</tr>
<tr>
<td>
@@ -90,7 +109,7 @@
pan <em>w</em>est
</a>
</td>
<td id="map" class="smallmap"></td>
<td id="map" class="smallmap" tabindex="0"></td>
<td>
<a href="javascript: void map.pan(map.getSize().w / 4, 0);"
accesskey="e">
@@ -113,9 +132,9 @@
<div id="docs">
<p>Navigate the map in one of three ways:</p>
<ul>
<li>Click on the named links to zoom and pan</li>
<li>Use following keys to pan and zoom:
<ol>
<li>Use Access Key "1" (alt + 1) to focus the map element, and
use following keys to pan and zoom:
<ul>
<li>+ (zoom in)</li>
<li>- (zoom out)</li>
@@ -124,8 +143,12 @@
<li>left-arrow (pan east)</li>
<li>right-arrow (pan west)</li>
</ul>
See <a href=http://en.wikipedia.org/wiki/Access_key>wikipedia</a> for
more detail about Access Keys.
</li>
<li>If access keys work for links in your browser, use:
<li>Navigate to pan and zoom links using the "tab" key, and
press "enter" to pan and zoom</li>
<li>If Access Keys work for links in your browser, use:
<ul>
<li>i (zoom in)</li>
<li>o (zoom out)</li>
@@ -135,7 +158,7 @@
<li>w (pan west)</li>
</ul>
</li>
</ul>
</ol>
<p>
This is an example of using alternate methods to control panning and zooming. This approach uses map.pan() and map.zoom(). You'll note that to pan, additional math is necessary along with map.size() in order to set the distance to pan.